Granular explosive, especially suitable for the preparation of pressed pieces, and method of making the same.



O. REUTBR.

GRANULAR EXPLOSIVE, ESPECIALLY SUITABLE FOR. THE PREPARATION OF PBESSED PIECES,

AND METHOD OF MAKING THE SAME.

APPLIOATION FILED snr'r. 1a, 1911.

1,036,906, Patented Aug. 271 131;.

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orTonar-uha, GFSCHLEBUSCE-MANFORT, 'GERM'AEY, asszcnoa 'ro E; I. no rotor DE Neraoons rownnn COMPANY, or WILMINGTON, ncnawaee, a oorer'oaszrron on NEW JERSEY.

GfiANULAR EFXPLDSI VE, ESPECIALLY SUITABLE FOR THE EREPARATION OF'PB-ESSEIQ a EIEGES, AND METHOD OF- MAKJNG 'EE E sihrldiEq To all whom it may concern Be it known that I, Orro Rnrrrnn, a subject of the Emperor of Germany, residingat Schlebusch-lvlanfort, Germany, have invented a new and useful Improvement in Granular Explosives, Especially Suitable for the Preparation of Fressed Pieces, and Methods of" Making'the Same, of which the following is a full, clear, and exact description.

The object of my invention is to produce :1 nitro compound explosive that 1s especialiy suitable for the preparation of pressed pieces. i

My process consists in taking a fused aromatic nitro compound explosive, forming. the same in layers and chilling the same, thereby reducing the explosive to a granular or flaky condition, and, in mixturewith a crystalline explosive, pressing the same. I

.material notwithstanding'its lugh density.

F or this purpose I can use a chilled rotating roller which dips into the fused explosive, for instance,'- trinitrotoluene. While the roller continues to'rotate, the thin layer carried along thereby is chilled and. after the roller has revolved, on its axis, a certan distance, the layer is removed by means of a The layers may then be pressed together. Instead of this the molten explosive may run in a stream upon the roller and after chilling be removed by a scraper.

The drawing is a side elevation of an apparatus by means of which the fused, nitro compound may be reduced to said granular or flaky condition, in accordance with my process.

In a jacketed receptacle a, heated, for example, by steam, the trinitrotoluene is fused. By means of a cock 6, the same is passed in regulated quantities through the trough c to the container cl. -The rotating roll e, which may be cooled from the inside by any suitable means, as for instance, water, dips into the fused trinitrotoluene in the container (1. There is thus formed on the surface of the roller a thin layer of trinitrotoluene which is rapidly chilled. When the. samereaches the scraper f, the trinitrotoluene peels oil. in the shape of fine flakes, and drops, by way of a conveyer 9, into the receptacle pressed body,

Speciflcationof Let-tershtent. Patented Aug. 27, 1912, Application filed September 16, 1911. Serial No. 549,746.

2' represents a pipe for conveyingwater to the interior of the roll, and'y' the Water outlet pipe.

The fine flakes entering the receptacle are or very solid consistency, are free from air, completely dry and possess the high density of a fused explosive. The flaky trinitrotoluene may then be pressed alone or mixed with a crystalline explosive. The line flakes are maintained intact during the pressing With the crystalline explosive and are clearly and plainly visible in the finished producing therein a mottled appearance. The flakes form, as it were, the exceedingly stable frame work of the pressed body which, as a consequence there: of possesses a high degree of stability and is free fronrcracks. The crystalline material between'the grains Or the iusedproduct insures a perfect detonation of the pressed The method described for the preparation of this flaky or granular explosive can be applied with equally satisfactoryresult in the preparation of explosives for blasting or oses in not stron lv ressed but in- P P v P in case this is desired in mixtures with crystalline explosives, etc.

,Having now fully described my invention, what I claim and desire to protect by Let'- ters Patent is:

granular state and 1. The method of preparing explosives which comprises forming a fused nit-r0 aromatic explosive compound into layers, solidifying the layers by means of chilling, and breaking up the layers to produce a mass of 2. The method of preparingpressed explosives which comprises forming a fuse nitro aromatic compound'into layers, soliditying the layers by 'meansof chilling, breaking up the layers to produce a mass of;

fine flakes and subjecting thesame to pres' sure to produce pressed pieces.

3. The method of preparing explosives which comprises forming a fused nitro arc-1 4. The method of preparing pressed ex- In testimony of which invention, I have PIOSLVGS whieh consists in formmg a fused hereunto setmy hand at Cologne, Germany, nitro aromatlc compound into layers, solidion this 31st day of August 1911.

fying the layers by means of chilling, break- OTTO REUTER. 5 ing up the layers mixing the mass of fine -Witnesses:

flakes thus formed with a crystalline exp10- j LOUIS VANDORN,

sive an& subjecting the same to pressure. FRANZ WILLEMS. 

